Two piston sleeve port engine



Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE Original Filed May 7, 1952 l I 1 l ili;

23 Sheets-Sheet 1 FIG. .I 27

INVENTOR.

JAMES A. HARDMAN HIS ATTORNEY Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 23 Sheets-Sheet 2 Original Filed May 7, 1962 mm MN mm mm INVENTOR.

JAMES A. HARDMAN ms ATTORNEY g- 1963 J A. HARDMAN 3,398,728

TWO. PISTON SLEEVE PORT ENGINE Original Filed May 7, 1962 .25 Sheets-$heet 4 FIG. 4

INVENTOR. JAMES A. HARDMAN HIS ATTORNEY Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 25 Sheets-Sheet 5 Original Filed May '7, 1962 INVENTOR. JAMES A. HARDMAN' W WW HIS ATTORNEY Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 25 Sheets-Sheet 6 ed May 7, 1962 Origina INVENTOR. JAMES A. HARDMAN "W WW HIS ATTORNEY 7, 1968 J. A. HARDMAN 3,398,728

TWO PISTON SLEEVE PORT ENGINE Original Filed May 7, 1962 23 Sheets-Sheet 7 INVENTOR. JAMES A. HARDMAN BYWWM/ HIS ATTORNEY 1968 J. A. HARDMAN 3,398,728

TWO PISTON SLEEVE PORT ENGINE Original Filed May 7, 1962 23 Sheets-Sheet a J 1= '5 L Q4; 5-1: H 0 3 -Og JO FIG. 20

HIS ATTORNEY 2 68 J. A. HARDMAN 3,398,728

TWO PISTON SLEEVE PORT ENGINE Original Filed May '7, 1962 23 SheetsSheet 9 INVENTOR.

JAMES A. HARDMAN BYWWWM/ HIS ATTORNEY Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 25 Sheets-Sheet 10 Original Filed May 7, 1962 FIG. 28

FIG. 27

INVENTOR.

N A M W Y M M R A m T S M A AWN J H Y B 7, 1968 J. A. HARDMAN 3,398,728

TWO PISTON SLEEVE PORT ENGINE Original Filed May 7, 1962 23 Sheets-Sheet 11 253 257 7 2%2 TDC Miss llHllHHlllllllllllllIIIIIHHIIIIHIIIII l I I I INVENTOR. 29A JAMES A. HARDMAN HIS ATTORNEY Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 23 Sheets-Sheet 1 2 Original Filed May 7, 1952 FIG. 33

HQ 34 I INVENTOR.

JAMES A. HARDMAN HIS ATTORNEY Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE Original Filed Ma 7,

25 Sheets-Sheet 15 INVENTOR.

FIG. 36

Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 23 Sheets-Sheet 14 Original Filed May 7, 1962 FIG. 37

HIS ATTORNEY FIG. 3B

Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 23 Sheets-Sheet 15 Original Filed May 7, 1962 FIG. 39 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\W ENTOR. JAMES A. HARDMAN BY w WW FIG. 40

HIS ATTORNEY Aug. 27, 1968 J. A. HARDMAN TWO PISTON SLEEVE PORT ENGINE 23 Sheets-Sheet 17 Original Filed May 7, 1962 FIG. 44

Rm WM NW Y E E V N m R A m T m A 8 MW m Y B J. A. HARDMAN 3,398,728

TWO PISTON SLEEVE PORT ENGINE 19s: 2s Sheets-Sheet 123 WWW - mm llf w kiwi Aug. 27, 1968 Original Filed May 7,

[H HT INVENTOR.

JAMES A. HAR N BY HI A TOR EY 27, 68 J. A. HARDMAN 3,398,728

TWO PISTON SLEEVE PORT ENGINE Original Filed May '7, 1953 25 Sheets-Sheet 19 FIG. 49

INVENTOR. JAMES A. HARDMAN g- 1968 J. A. HARDMAN 3,398,728

TWO PISTON SLEEVE PORT ENGINE Original Filed May 7, 195? 23 Sheets-Sheet 20 FIG. 50

INVENTOR.

JAMES A. HAR MAN BY fi W HI TTORNEY 

